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Abstract(s)
INTRODUÇÃO: A unidade dentogengival é o complexo anatómico formado pela gengiva, sulco gengival, epitélio juncional e inserção de tecido conjuntivo, também conhecido como inserção supracrestal. Este é essencial para o sucesso de vários procedimentos em Medicina Dentária e consequente manutenção da saúde periodontal. Existem numerosos métodos para medir as dimensões da UDG, mas os estudos que utilizam CBCT ainda são muito escassos.
OBJETIVO: Caracterizar o fenótipo gengival e fazer a determinação das dimensões da unidade dentogengival na região anterior da maxila com análise por CBCT. MATERIAIS E MÉTODOS: A população total do estudo consiste de 50 elementos, aos quais uma tomografia computorizada de feixe cónico da maxila anterior foi realizado com o equipamento MID Planmeca ProMax® 3D com as mesmas especificações / condições. A caracterização da unidade dentogengival foi realizada medindo-se os seguintes parâmetros nos dentes 21 e 11: Espessura da Gengiva Livre; Espessura da Gengiva Aderida; Espessura da Gengiva na Inserção Supracrestal; Espessura Osso Alveolar; Distância da Linha Amelocementária à Crista Alveolar; Distância da Linha Amelocementária à Margem Gengival Livre; Altura Alveolar; Largura Alveolar; e Diâmetro Mesio-distal do foramen incisivo.
RESULTADOS: Obtiveram-se os valores médios em cada parâmetro para os dentes 11 e 21, assim como os valores da correlação de Pearson entre variáveis, sendo que as que apresentaram relação estatística foram ‘espessura da gengiva livre’ e a ‘espessura na inserção supracrestal’; a largura e altura alveolares; e a ‘distância da linha amelocementária à crista alveolar’ e a ‘distância da linha amelocementária à gengiva livre’. Relativamente à análise por sexo, verificou-se uma associação positiva entre o sexo masculino e as medições dos parâmetros ‘largura alveolar’ e a ‘papila incisiva’. Foi descoberta uma relação estatística negativa entre a existência de ‘tratamento ortodôntico prévio’ e a ‘espessura do osso alveolar’, encontrada igualmente em ambos os dentes estudados.
CONCLUSÕES: Dentro das suas limitações, este estudo comprovou a fiabilidade e eficácia do CBCT como método de análise destas variáveis, sendo possível efetuar com sucesso a determinação de vários parâmetros da unidade dentogengival com recurso ao CBCT
INTRODUCTION: The dentogingival unit is the anatomical complex formed by the gingiva, gingival sulcus, junctional epithelium and connective tissue insertion, also known as “biological space”. The biological space is essential for the success of various procedures in Dentistry and consequent maintenance of periodontal health. OBJECTIVE: Characterize the gingival phenotype and determine the dimensions of the dentogingival unit in the anterior region of the maxilla with CBCT analysis. MATERIALS AND METHODS: The total population of the study consists of 50 individuals. A CBCT of the anterior maxilla of each participant was performed with the MID Planmeca ProMax® 3D equipment with the same specifications / conditions. The characterization of the dentogingival unit was performed by measuring the following parameters on teeth 21 and 11: Free Gingival Thickness; Thickness of Adhered Gingiva; Gingiva Thickness in Supracrestal Insertion; Thickness Alveolar Bone; Distance from the Alveolar Crest to the Amelocement Line; Distance from the Amelocement Line to the Free Gingival Margin; Alveolar Height; Alveolar Width; and Mesio-distal diameter of the foramen incisor. RESULTS: The mean values in each parameter for the teeth 11 and 21 were obtained, as well as the Pearson correlation values between variables, and those that presented statistical relationship were ‘free gingival thickness’ and ‘thickness at supracrestal insertion’; alveolar width and height; and between ‘distance from amelocentral line to alveolar crest’ and ‘distance from amelocentral line to free gingiva’. Regarding the analysis by gender, there was a statistically significant positive association between males and measurements of ‘alveolar width’ and ‘incisive papilla’ parameters. A statistically significant negative relationship was found between the existence of ‘prior orthodontic treatment’ and ‘alveolar bone thickness’, found in both teeth studied. CONCLUSIONS:Within its limitations, this study proved the reliability and effectiveness of CBCT as a method of analysis of these variables, and it was possible to successfully determine several parameters of the dental gingival unit using the CBCT.
INTRODUCTION: The dentogingival unit is the anatomical complex formed by the gingiva, gingival sulcus, junctional epithelium and connective tissue insertion, also known as “biological space”. The biological space is essential for the success of various procedures in Dentistry and consequent maintenance of periodontal health. OBJECTIVE: Characterize the gingival phenotype and determine the dimensions of the dentogingival unit in the anterior region of the maxilla with CBCT analysis. MATERIALS AND METHODS: The total population of the study consists of 50 individuals. A CBCT of the anterior maxilla of each participant was performed with the MID Planmeca ProMax® 3D equipment with the same specifications / conditions. The characterization of the dentogingival unit was performed by measuring the following parameters on teeth 21 and 11: Free Gingival Thickness; Thickness of Adhered Gingiva; Gingiva Thickness in Supracrestal Insertion; Thickness Alveolar Bone; Distance from the Alveolar Crest to the Amelocement Line; Distance from the Amelocement Line to the Free Gingival Margin; Alveolar Height; Alveolar Width; and Mesio-distal diameter of the foramen incisor. RESULTS: The mean values in each parameter for the teeth 11 and 21 were obtained, as well as the Pearson correlation values between variables, and those that presented statistical relationship were ‘free gingival thickness’ and ‘thickness at supracrestal insertion’; alveolar width and height; and between ‘distance from amelocentral line to alveolar crest’ and ‘distance from amelocentral line to free gingiva’. Regarding the analysis by gender, there was a statistically significant positive association between males and measurements of ‘alveolar width’ and ‘incisive papilla’ parameters. A statistically significant negative relationship was found between the existence of ‘prior orthodontic treatment’ and ‘alveolar bone thickness’, found in both teeth studied. CONCLUSIONS:Within its limitations, this study proved the reliability and effectiveness of CBCT as a method of analysis of these variables, and it was possible to successfully determine several parameters of the dental gingival unit using the CBCT.
Description
Keywords
Unidade dentogengival Fenótipo gengival CBCT Dentogingival unit Gingival thickness